Jar-closure.



R. UHL. JAR CLOSURE.

Amman-Ion FILED MAY 20. 1905.

PATENTED DEG. 5,1905.

' wherein- 'jar neck, and a central vertical sectionof the 25 glass capattached thereto, shown in aclosed" PATENT: OFFICE; j RUSSELL UHL, orWILKEA'SBARRE, PENNSYLVANIA; assienon'ro PER- FECTIQN GLASS 1 COMPANY,or WASHINGTON, PENNSYLVANIA, A

3 "CORPORATION OF PENNSYLVANIA,

' Mai-"cu shas no. 808,602. Y

To all whom: it may concern: Be it known that I,- Russ'nLn UHLJI.citizen of'the United .States residing at Wi-lkesbarre,. 1 in theState-of Pennsylvania, have'invented ticularly to scaling device'sdesigned, to dis-- pense with metallic parts and attach a glass cap upona glass jarneck." The objects of the invention are, to provide a tightseal between the glass parts without using metallic fastening means, andto so design the glass cap as to render the attachment more operobjectsand advantages will hereinafter appear. I have shown a preferred form ofthe construction in the accompanying drawing,

Figure 1 is a sideview of .a common Mason position; I l

Figures 2'and 3 are central vertical sections taken at right angles to,"each other showing the positions of the engaging lug and the.

thread when the cap is first placed on and before it has been revolvedinorder to engage I the same;

I that by designing the parts in certain proportions and operating themin a certain way this result maybe accomplished. Thus, it will be Thecommon Masonjarhaving a rounded glass thread is a standard article inthe market, and various unsuccessful attempts have been made to applyclosing caps to said jars without the use of metal which is readilycorroded by the contents of the jar and is otherwise,

objectionable. The principal difliculty has come from the impossibilityof making threads upon a glass cap whichl'will fit the jar and at thesame time will notbindwhenthe thread happens to bc'so'mewhat irregularin size or.

shape. The fitting of glass upon glass in such a closure has beengenerally regarded as an impossibility. I have discovered, however,

seen by the, drawing that the jar neck 4 has I the usual half-roundraised ridge or thread 5 which extends a little over one circumferenceSpecification of Letters Patent. Application filed'Hay 20,1905. SerialNo-BBLSIQ.

Patented Dec, 5, 1905,

of the-neck, and the jar-'has a shoulder to receivethe rubber gasket 6.The cap as well as the jar is made of glass, and it"will be seen that onthe flanges of the cap 7 I have pro-- vided an annular bead 8, toproperlyengage the gasket 6. Inside of the cap is provided a spiralledge 9 which extends a little over onecircumferenc'e of theinsideof-the cap. This ledgeis made of an inside diameter of the thread 5, buta gooddeal larger than from the figure. It has a sloping surface (in topand is arranged as shown in, Figures .2

and 3 so that when-the cap is .in a certain pdsitionas there shown thecap may readily slightly less than the extreme outer diameter thediameter of theneck itself, as will be plain portion of the ledge 9,marked '9 in Figure 2, is above the thread 5-and the end portion marked9* may therefore be slid under the end of thethread 5. The cap thenbeinggiven about a half a revolution-it will be seen that the ledge 9 willengage about half or a little 4 more than halfofthe circumference of thethread 5 andlock the jar in place; but since I 'it is not necessary'toengage the entire circumference, the closure will be made whether thethreads fit'each other or not; and this is the essential thing in myinvention:

In operation when the cap ispu't on in the position shown in Figures 2and 3, which are sections taken'in planes at right angles to each other'in order to show the initial position, the cap may begiven aturn movingthe ledge 9" on the cap for about half a revolution.- It

will not make any greatdiflerence Whether this ledge'touches the threadall the distance or only at occasional points, and in a certain positionthecombined action of: thecontact of the top of'the ledge with,thethread 5 and the" seating ofv the cap upon the shoulder of the jar willcause a downward pressure of the cap upon the gasket, even though thecap should touch the thread of the jar at but one or two points; all ofwhich will beevident,

from the drawing. Various advantages of v this'device will readily occurto those familiar ,with the art, as I have by this arrangementenabledthe use of a glass cap upon a stand- 'ard glass jar found in themarket, without the usual difficulties in. the'way of fitting the twoTOO together, and notwithstanding the customary irregularities of thethread.

0 Having thus described my invention and illustrated its use, whatIclaim as new, and

desireeto secure by Letters Patent, is the fol- 'one circumference andlarge enough to slide a over the thread when in one position and to lockwith the thread on the jar when in another position, substantially asdescribed.

3. The combination with a jar neck having a spiralglass thread, of aglass cap having a spiral glass ledge thereon of a slightly lessdiaineterthan the thread on the neck and arranged substantially as shownwhereby the cap may be seated 'upon the jar without engaging the threadand then by a turn of the cap the said ledge will engage the threadabout half a. turn, substantially as described.

In testimony whereof-l have hereunto signed my name in the presence ofthe two subscribed witnesses. i

- RUSSELL UHL. Witnesses:

JULIUS P. MILLER, Jr., J, P. MILLER.

